Mercedes-Benz has taken a significant step forward in electric vehicle (EV) technology by developing and testing a solid-state battery in collaboration with Factorial Energy. The company’s Formula 1 engineering division, Mercedes AMG High Performance Powertrains (HPP), played a crucial role in bringing this cutting-edge battery technology from the lab to the road. The test program integrates a lithium-metal solid-state battery into an EQS prototype, marking a milestone in EV innovation. By utilizing solid-state chemistry, Mercedes-Benz aims to enhance driving efficiency, safety, and energy density while reducing weight, ultimately leading to a 25% increase in range compared to conventional lithium-ion batteries.
Solid-state battery technology represents a significant breakthrough for electric mobility, replacing liquid electrolytes with solid ones to improve energy density and safety. The advanced lithium-metal anode enables higher gravimetric energy densities of up to 450 Wh/kg, enhancing vehicle efficiency and performance. The new battery design also incorporates a patented floating cell carrier system, which adapts to expansion and contraction during charging and discharging, improving battery longevity. Additionally, the use of passive cooling reduces the overall weight, further optimizing energy efficiency. These technological advancements position solid-state batteries as a promising alternative for the future of EVs.
The EQS prototype equipped with the solid-state battery is expected to surpass 1,000 km (620 miles) of driving range, a remarkable improvement over the current EQS 450+, which offers around 800 km (497 miles). By achieving this milestone, Mercedes-Benz demonstrates that solid-state technology is no longer just theoretical but is now being tested in real-world conditions. Factorial’s proprietary FEST® (Factorial Electrolyte System Technology) platform has played a key role in making this advancement possible, showcasing the potential for widespread adoption of this innovative battery chemistry.
Moving forward, Mercedes-Benz will continue to conduct extensive road and laboratory tests to evaluate the battery’s performance and integration into future production vehicles. Since forming a partnership with Factorial in 2021, the company has steadily advanced its solid-state battery development, with the latest prototype representing a crucial step toward commercial viability. With ongoing research and testing, Mercedes-Benz aims to revolutionize the EV landscape, setting new industry benchmarks for energy efficiency, safety, and driving range.
